Device for supplying oil to internal-combustion engines.



P. D. JOHNSTON. DEVICE FOR SUPPLYING OIL TO INTERNAL COMBUSTION ENGINES.APPLICATION FILED JULY 7, 1906.

997,136. Patented July 4, 11911.

A um CONNECTED O ENGINE GOVERNOR, V

7 FECIPROCATED 5V THE ENGINE.

THE ENG/NE Attorneys.

iINrrnn sia'frns PATENT OFFICE.

lPHILIP DEVEREUX JOHNSTON, OF CGLD SPRING, NEW YORK, ASSIGNOR TOAMERICAN OIL ENGINE COMPANY,,A CORPORATION OF NEW YORK.

DEVICE FOR SUPPIJYING OIL T0 INTERNAL-COMBUSTION ENGINES.

. Specification of Letters Patent.

Patented July 4, 1911.

Application filed an 1906. serial No. 325,113. I

To all whom it may concern:

Be it known that I, PHILIP DEVEREUX JOHNSTON, a citizen of the UnitedStates, residing at Cold Spring, in the county of Putnam and State ofNew York, have invented a certain new and useful Improvement-in Devicesfor Supplying Oil to Internal-Combustion Engines, of which the followingis a description.

The object I have in View is the production of a device for useinconnection with internal combustion engines, particularly of the typewhich employs the denser hydrocarbons which are vaporized or atomizedwith water or air under pressure.

By the present invention I seek-to govern the quantities of oil or waterintroduced into the engine by positive means actuated directly at thepump.

Further objects of the invention are to produce means for permittin thisto be done, such means being simple, possessing few parts, and which aresure and certain in their operation.

These and further objects will appear from the following specificationand accompanying drawings.

I attain these objects by the mechanism illustrated in the accompanyingdrawings, which show one embodiment of the invention, and in which Figure 1 is a section of the pump, the governing valve, and the mixingvalve; Fig. 2 is a section on the line 22 of Fig. 1; and Fig. 3 is asection on the line 33 of Fig. 1 looking toward the pump.

In all the views like parts are designated by the same referencecharacters,

In carrying out my invention 1 provide a pump which is actuated by acztni or other means operated from the engine so as to give an impulseto inject the liquid into the mixing chamber atthe proper period of thecycle of operation of the engine. This pump works with an invariablestroke, and a valve is provided to regulate the amount of liquidinjected by the pumps, a loaded valve being connected to a bypass toper-- init the escape of the surplus. In connec tion with this pump is amixing valve, by

age aroundthe top of the piston.

means of which oil and water, each introduced through separate nozzlesfrom separate pumps, will be vaporized and mixed in connection with astream of air introduced under pressure into the same mixing chamber.The complete mixture will pass into the combustion chamber through acutoff valve, which will be operated at the proper time to prevent backpressure from forcing the products of combustion into the mixingchamber.

In the drawings the reference character 1 represents the casing for thepump, in which a hollow piston 2 is reciprocated. A packing and glandare provided to prevent leakof the piston is provided with a port, whichis closed by a ball valve 3. Communicating with. the central opening ofthe casing 1 is an annular port at which communicates with a by-pass 5.Liquid is supplied to the pump through the port 29, which communicateswith the annular port 4. Above this annular port 4 is a second annularport 6, which is closed by a spring-loaded valve 7, the

The end works a slide valve 13. This slide valve 13 is provided with anannular port 14 intermediate its ends, which communicates with the port6 and also with an exhaust port 15. The valve 13 is hollow and isprovided with equalizing ports 16 in its head. .It is operated by meansof a spindle 17 which passes through a packing and gland at the top ofthe valve chamber 12. The ports 16 per? mit equalization of pressureinside and outside of the valve, so that it may be readilyv moved Withinthe chamber. The ports 16, permitting the valve to be balanced, allow,

20 I the configuration of this port a uniform it to be moved with verylittle force neces sary to be exerted uponit. This is of'impo-r'tance inconnection with automaticgov-,

erning mechanism, the power available to be exerted by the governorbeing limited, and it being desirable that the valve be capable of beingmoved with the smallest possible amount of energy.

The size oftheannular port 14: is such, and its location is soarrangedin relation to the port 6, that it will always be in comsitionshown in the drawing, it may more or less completely close such port.The port nection with each mixing valve.

15 is reduced in cross-section at 18 adjacent to the valve 13 so as toprovide a narrow vertical opening, which constitutes a port or littlewidth in proportion to'height. By

movement of the valve will produce a sub stantially uniform opening orclosing of the passage, which would not be the case if the size of theport were not so reduced as toproduce a vertical port, as shown. Theport need notnecessarily be rectangular as the same results may besecured by means of a port which'is not exactly a true rectangle inshape. A screw-plug closes the lower extremity of the valve chamber 12and permits the removal of the valve, and. a removable plug also closesthe bottom of the pump chamber 1 to permit removal of sediment and otherforeign matters.

In connection with the pump thus describedis used a mixing valve, itbeing understood that two pumps are used in con- The connectingpipebetween the valve and the pump is shown in dotted lines. The mixingdevice comprises a body 19 having nozzles 20 screwed therein, one ofeach such nozzles being for oil and the other for wa-' ter, and eachbeing connected to a pump, as described. The orifices of the nozzles areopposite one another, as shown in Fig. 2, so that thejets of oil andwater. will strike against each other and the oilwill be completelyatomized and mixed with the finely divided water. An air nozzle 21 atright angles to the other two nozzles is provided, through which airunder pressure is admitted into the mixing chamber 22. This nozzle 21 isshown as closed by hand valve, by means of. which the extent of openingmay be regulated.

The mixing chamber communicates with the retort 23\through a cutofi'valve 2 1. This cut-ofi' valve is shown to be a slide valve havingacentral port which permits communication between the mixing chamber andthe retort. This valve is elevated by a spring 25, as shown, anddepressed by thestem or rod 26, the latter passing out through apacking, as shown, and being connected to an element on the engine tomove it at the proper time during the cycle of operation of the engine.

The controlling valve 13 is connected to the governor through the agencyof the rod 27.- A turnbuckle 28 is interposed between the rod 27 and thevalve stem 17 so as to vary the length of the rod and by means of whichthe position of the valve may be altered in relation to the governingmechanism. By providing one of these turnbuckles for each valve, theroportions of oil and water admitted into t e mixing chamber may bevaried as desired.

In operation, the pump 2 steadily forces the liquid (oil or Water) intothe port 6. A certain proportion of this liquid passes out through theport 15 into the mixing chamber, the proportion varying according to theposition of the valve 13. The surplus liquid passes through the bypassvalve 7 into the bypass 5 and into the an-' adjacent to the valve so asto provide a longitudinal passage.

2. In an internal combustion engine, the improved means for controllingthe admission of fuel thereto, which comprise a mixing device and apump, a: controlling valve between the pump and the mixing device,

joperatin means for the valve, and means for varymg the position of .thevalve in relation to the operating means. 3. In an internal combustionengine the improved means for controlling the admission-of fuel thereto,which comprises a mixing device and a pump, a controlling valve betweenthe pump and the mixing device, and means for operating said valve fromthe engine comprising a connection having a turn-buckle therein by meansof which the position of the valve may be adjusted.

4. In combination with an internal combustion engine, a pump forsupplying fuel thereto, comprising a cylinder, a hollow pistonreciprocating therein, a valve in the bottom of said piston, intake andoutlet ports in said cylinder, a bypass connecting said ports,'a loadedvalve in said by-pass This specification signed and witnessedperinitting passage of liquid only from 1:11; this 3rd day of July,1906.

out et ort to the in et ort, orts in sai piston iegistering with s zzidoiitlet port at PHILIP DEVEREUX JOHNSTON all positions of said piston,and a valve con- Witnesses: trolled by the engine governor for control-LEONARD H. Dm, ling the effective opening of said outlet port. AUG.LONG.

